91754989171 has 2 divisors, whose sum is σ = 91754989172. Its totient is φ = 91754989170.

The previous prime is 91754989163. The next prime is 91754989177. The reversal of 91754989171 is 17198945719.

It is a strong prime.

It is an emirp because it is prime and its reverse (17198945719) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91754989171 - 2³ = 91754989163 is a prime.

It is not a weakly prime, because it can be changed into another prime (91754989177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45877494585 + 45877494586.

It is an arithmetic number, because the mean of its divisors is an integer number (45877494586).

Almost surely, 2^91754989171 is an apocalyptic number.

91754989171 is a deficient number, since it is larger than the sum of its proper divisors (1).

91754989171 is an equidigital number, since it uses as much as digits as its factorization.

91754989171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 61.

The spelling of 91754989171 in words is "ninety-one billion, seven hundred fifty-four million, nine hundred eighty-nine thousand, one hundred seventy-one".